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Manuscript Title: A program for the calculation of energy spectra and reduced nuclear
matrix elements in the frame of Davydov-Chaban model. | ||

Authors: J. Lubian, R. Cabezas | ||

Program title: DAFICHA | ||

Catalogue identifier: ACLQ_v1_0Distribution format: gz | ||

Journal reference: Comput. Phys. Commun. 76(1993)98 | ||

Programming language: Fortran. | ||

Computer: INTEL 80386+80387. | ||

Operating system: MS-DOS 5.00. | ||

RAM: 200K words | ||

Word size: 16 | ||

Peripherals: disc. | ||

Keywords: Nuclear physics, Nuclear reaction, Davydov-chaban model, Matrix elements reduced, Coupled channels, Energy spectra, Square-roots Minimization, Weber functions, Nuclear deformation. | ||

Classification: 17.8. | ||

Nature of problem:Reduced matrix elements needed for coupled channel calculation in the frame of the Davydov-Chaban model are computed. Interacting potential is expanded in power of deformation paramemeters up to the second order terms, including the quadrupole and hexadecapole modes. The nuclear spectrum of Davydov-Chaban model is also computed. A search procedure of model parameters on the basis of the experimental spectra is included. | ||

Solution method:The Hamiltonian is diagonalized in the soft nonaxial rotator basis. The deformed Wood-Saxon potential is generated at a deformation specified in terms of the multipole expansion including nonaxial quadrupole alpha22(Y22+Y2-2) and hexadecapole alpha42(Y42+Y4-2), alpha44(Y44+Y4-4) components. The matrix elements are computed by numerical integration using the recursive procedure. | ||

Restrictions:Maximum number of nuclear states: 20 and maximum spin of the nuclear state: 24 | ||

Running time:Depends on the number of nuclear states considered. In the example presented below the running time is 71 seg. (for test-1) and 280 seg. (for test-2) on PC AT (INTEL 386-387), 33 MHz. |

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